Practice apparatus for small-arms.



H. B. HOLLIFIELD.

PRACTICE ABPAEATUS FOR SMALL ARMS.

APPLICATION FILED OUT. 30, 1914.

Patented M21112, 1915.

Adenine;

EEACTICE APPARATUS FOR SIlIALL-ARIES.

Specification of Letters Eatent.

:lpplication filed Gctoser 36, 1914. Serial No. 869,384.

T all u'imna. it may Concern Be it known that l, Homrio B. HOLLI- FIELD, a citizen of tee United States, residing at lVashington, in the District of Columbia, have invented certain new and useapparatus adapted for use in a rifle with ad ditionel devices whereby it may be accurately centered and held in .a shot gun of any ordinary gage and length of barrel, whether or not the gun he choke bored.

in the accompanying drawings, Figure 1 shows in side view a gun provided with my devices. Fig. 2 shows in like View the common practice apparatus provided with my novel devices. Fig. 3 is a partial enlarged view showing in axial section the devices in the muzzle portion or" e gun barrel. Fig. d is a. section at i4 Fig. 3, looking toward the left.

in these figures, i-irepresents a gun berrel, B t e marking rodproper, C 2. tube i closing the ed and fitting ordinary ride and a s, ring within the tube, i'or retrecticg the rod, all being without novelty.

in order that the common apparatus may be accurately centered and heldin any ordinery shot gun, or the like, it is provided with detachable devices for both its rear and forward portions, whereby it 13 ac curetely adjusted in the larger bore. 'lhese evices consist of springs E, E secured to the uer end of the tube and analogous springs detechebly' and slideloly fixed to the 'orwerd portion oi said tube. The springs i, which are or mey be very light since they merely h id rear end oi the tuoe in e ament, shown as Iour innumber, although three or more may be used, are simple burs curved outward centrally, i ree :1 Me i one end end at the other fired to a short seeve E which is threaded upon the inner The similar oppositely preferably heavier and d to e sleeve? which turned sp "1 n are eecui er.

slides upon the tube and is secured thereto by a setscrew G. Upon this sctscrew is threaded a short sleeve 1 bearing an integral disk I provided with s marginal cylindrical flange J which is externally milled and which gradually increases in width from at minimum on one side to a maximum on the opposite side, thus forming e sort of rotary wedge.

in assembling, the forward centering de vice is slipped upon the tube and the rear centering device is screwed into position, and the device I, J is so turned that the narrower side of the flange toward the rear. The tube is then pushed into the barrel from the muzzle, the rear springs being compressed more or less according to the size of the bore, and the outer centering device is forced along the tube until the springs F are fully inserted in the barrel, when the device is locked to the tube by the setscrew G. Obviously, if the springs of each set be uniform, the tubes axis will socurately coincide with the axis of the barrel, whatever the bore of the latter, and as plainly the outer or forward centering device willoccupy a position upon the tubedepending upon the length of the particular barrel. Finally the wedge like flange is reteted until it gently presses upon the exterior of the berrels muzzle portion, thereby giving additional security against accidental displacement of the devices in prectising with thE-i gun, and especially the slight rearward crawling of the tube, which leaves the rod relatively too forward, and in case of use in a. revolver, causes loci ring of the cylinder. This forward centering device also serves as 'a stop limiting the distance to which the tube may enter the barrel. For example, if dummy cartridges are used, the stop may be fixed to the tube at such point that the rod just reaches the point of the dummy cartridge, whatever its length, and thereafter no change need be made so long eslike cartridges are used.

Obviously the devices added to the usual practice rod may be quickly removed when it is to be again used in a. rifle.

What l: claim is: I

1. In e device of the class described, the combination with a practice rod tube, of two spring centering devices detac bly secured to said tube near its ends, res ively, and. each adapted for frictional en enient with the interior of gun barrels of difiercut internal diameters, the forward or outer device being arranged for adjustment longitudinally of the tube to bringit into the muzzle of a longer or shorter barrel in which the tube may be inserted.

2. In a device of the class described, the combination with a practice rod tube, or members detachably 'secured'to the rear and forward end portions of the tube, respectively, and each having a series of angularly spaced spring bars bent outwardly from the tube between their ends for frictionally engaging the'interiors of barrels of different internal diameters, and means for locking the forward member to the muzzle portion of a gun barre 3. In apparatus of the class described, the

combination with a practice rod tube, of a radially compressible spring centering device detachably fixed upon the inner end of the tube, and a second similar device adjust- Ooplu of this patent may be obtained for five cents tube to be inserted in the barrel of small arms, of spring tube-centering devices removably mounted on the end portions of the tube, respectively, means for locking the forward device to the tube, and means for clamping the said forward device to the muzzle of the barrel in which it may be inserted.

In testimony whereof I aflix my signature in presence of two Witnesses.

HORATIO B. HOLLIFIELD.

Witnesses:

ROBERT CRAIG GREENE, SAMUEL M. Biiosnzrs.

each, by addressing the Commissioner of Patents Washington, .D. C. 

